Security readout for executives and security teams
Plain-English summary
A WordPress membership plugin allowed new registrants to choose their own account role. On vulnerable sites, an unauthenticated visitor could register as an administrator, taking over the site. This is critical for any public site using the plugin with membership registration enabled.
Executive priority
Treat as urgent for affected public WordPress sites. A successful attack could give full site control without credentials, affecting content integrity, customer trust, and potentially stored user data.
Technical view
CVE-2026-1492 is improper privilege management in User Registration & Membership up to and including 5.1.2. The registration flow accepted a user-supplied role without enforcing a server-side allowlist, enabling unauthenticated administrator account creation. CVSS is 9.8, network exploitable, low complexity, no privileges or user interaction required.
Likely exposure
Exposure is most likely on WordPress sites running User Registration & Membership version 5.1.2 or earlier, especially where membership registration is enabled and reachable from the internet.
Exploitation context
The CVE describes unauthenticated privilege escalation to administrator. The source bundle does not show CISA KEV listing or cited evidence of active exploitation, so active exploitation is not confirmed here.
Researcher notes
The description and Wordfence reference identify the vulnerable condition and version range. The WordPress Trac changeset appears relevant to remediation review, but this bundle does not clearly state a fixed release version. Confirm final vendor advisory details before closing.
Mitigation direction
- Inventory WordPress sites for the User Registration & Membership plugin and installed version.
- Upgrade from versions 5.1.2 or earlier using vendor or WordPress plugin guidance.
- If immediate update is unavailable, disable membership registration or the plugin until remediated.
- Review newly created administrator accounts for unauthorized additions.
Validation and detection
- Confirm whether the plugin is installed on each WordPress site.
- Check whether the installed version is 5.1.2 or earlier.
- Verify public membership registration is disabled or protected until patched.
- Audit administrator users created around the exposure window.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-269: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-1492 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Privilege Management
Improper Privilege Management represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.